639AS872 — SCREW,CAP,SOCKET HEAD

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

639AS872: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OR NICKEL ALLOY OVERALL, head_style: PAN NO. 2, head_height: 0.083 INCHES MINIMUM AND 0.086 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.134 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN, thread_length: 0.250 INCHES NOMINAL IN.

This part is cataloged in the U.S. Government catalog under NSN 5305-01-070-8171, indicating validated use in U.S. government and defense logistics supply chains.

Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS

639AS872

NSN: 5305-01-070-8171
FSC: 5305 — Screws
CAGE: 30003 — NAVAL AIR SYSTEMS COMMAND MANAGED ORIGINAL DESIGN ACTIVITY NOT MATERIAL/PARTS SUPPLIER (USA)

SPECIFICATIONS

material	STEEL CORROSION RESISTING OR NICKEL ALLOY OVERALL
head_style	PAN NO. 2
head_height	0.083 INCHES MINIMUM AND 0.086 INCHES MAXIMUM IN
thread_class	3A A
head_diameter	0.134 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN
thread_length	0.250 INCHES NOMINAL IN
fastener_length	0.375 INCHES NOMINAL IN
hardness_rating	80.0 ROCKWELL B NOMINAL OVERALL
locking_feature	PELLET THREADS
thread_direction	RIGHT-HAND
surface_treatment	PASSIVATE OVERALL
width_across_flats	0.078 INCHES MINIMUM AND 0.079 INCHES MAXIMUM IN
NSN	5305-01-070-8171

COMPONENT DIAGRAM

KEY FEATURES

•

WIDTH ACROSS FLATS: 0.078 INCHES MINIMUM AND 0.079 INCHES MAXIMUM IN

•

HEAD HEIGHT: 0.083 INCHES MINIMUM AND 0.086 INCHES MAXIMUM IN

•

FASTENER LENGTH: 0.375 INCHES NOMINAL IN

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL

•

THREAD LENGTH: 0.250 INCHES NOMINAL IN

•

HARDNESS RATING: 80.0 ROCKWELL B NOMINAL OVERALL

•

MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763,COMP 302 OR 303 OR304 OR 305 OR 316 FED SPEC SINGLE MATERIAL RESPONSE OR 66,302 OR 303 OR304 OR 305 OR 316 OR 16-18 OR 18-8 FED STD SINGLE MATERIAL RESPONSE OVERALL

•

NOMINAL THREAD DIAMETER: 0.086 INCHES IN

TECHNICAL CHARACTERISTICS

WIDTH ACROSS FLATS	0.078 INCHES MINIMUM AND 0.079 INCHES MAXIMUM IN
HEAD HEIGHT	0.083 INCHES MINIMUM AND 0.086 INCHES MAXIMUM IN
FASTENER LENGTH	0.375 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH	0.250 INCHES NOMINAL IN
HARDNESS RATING	80.0 ROCKWELL B NOMINAL OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-S-763,COMP 302 OR 303 OR304 OR 305 OR 316 FED SPEC SINGLE MATERIAL RESPONSE OR 66,302 OR 303 OR304 OR 305 OR 316 OR 16-18 OR 18-8 FED STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER	0.086 INCHES IN
HEAD STYLE	PAN NO. 2
THREAD DIRECTION	RIGHT-HAND

OTHER ITEMS IN FSC 5305 — Screws

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

5305-00-000-0094 5305-00-000-1397 5305-00-000-2625 5305-00-000-3669 5305-00-000-3830 5305-00-000-3831

SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is 639AS872?

639AS872 is a SCREW,CAP,SOCKET HEAD.

What is the NSN for 639AS872?

639AS872 is cataloged in the U.S. Government catalog under NSN 5305-01-070-8171. This indicates validated use in U.S. government and defense supply chains.

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639AS872 — SCREW,CAP,SOCKET HEAD

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